1 | //===-- aeabi_dcmp.S - EABI dcmp* implementation ---------------------------===// |
2 | // |
3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
4 | // See https://llvm.org/LICENSE.txt for license information. |
5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
6 | // |
7 | //===----------------------------------------------------------------------===// |
8 | |
9 | #include "../assembly.h" |
10 | |
11 | // int __aeabi_dcmp{eq,lt,le,ge,gt}(double a, double b) { |
12 | // int result = __{eq,lt,le,ge,gt}df2(a, b); |
13 | // if (result {==,<,<=,>=,>} 0) { |
14 | // return 1; |
15 | // } else { |
16 | // return 0; |
17 | // } |
18 | // } |
19 | |
20 | #if defined(COMPILER_RT_ARMHF_TARGET) |
21 | # define CONVERT_DCMP_ARGS_TO_DF2_ARGS \ |
22 | vmov d0, r0, r1 SEPARATOR \ |
23 | vmov d1, r2, r3 |
24 | #else |
25 | # define CONVERT_DCMP_ARGS_TO_DF2_ARGS |
26 | #endif |
27 | |
28 | #define DEFINE_AEABI_DCMP(cond) \ |
29 | .syntax unified SEPARATOR \ |
30 | .p2align 2 SEPARATOR \ |
31 | DEFINE_COMPILERRT_FUNCTION(__aeabi_dcmp ## cond) \ |
32 | push { r4, lr } SEPARATOR \ |
33 | CONVERT_DCMP_ARGS_TO_DF2_ARGS SEPARATOR \ |
34 | bl SYMBOL_NAME(__ ## cond ## df2) SEPARATOR \ |
35 | cmp r0, #0 SEPARATOR \ |
36 | b ## cond 1f SEPARATOR \ |
37 | movs r0, #0 SEPARATOR \ |
38 | pop { r4, pc } SEPARATOR \ |
39 | 1: SEPARATOR \ |
40 | movs r0, #1 SEPARATOR \ |
41 | pop { r4, pc } SEPARATOR \ |
42 | END_COMPILERRT_FUNCTION(__aeabi_dcmp ## cond) |
43 | |
44 | DEFINE_AEABI_DCMP(eq) |
45 | DEFINE_AEABI_DCMP(lt) |
46 | DEFINE_AEABI_DCMP(le) |
47 | DEFINE_AEABI_DCMP(ge) |
48 | DEFINE_AEABI_DCMP(gt) |
49 | |
50 | NO_EXEC_STACK_DIRECTIVE |
51 | |
52 | |